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BMW F20 EPS no see in esys
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28-10-2023, 22:15 PM,
Post: #1
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BMW F20 EPS no see in esys
Hello, I have a problem on a BMW F20, EPS is not visible in esys.
I've already replaced it with 4 EPS engines, I've already cloned an FEM and replaced it, the car works flexray starts without errors with the 2 FEM but EPS is never visible. there is 12v on the plugs, flexray lines up to the FEM are good and ground too. Has anyone had a similar problem and resolved it? Thanks |
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![[+]](https://cartechnology.co.uk/images/CarTechnologyTheCure/collapse_collapsed.png)
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29-10-2023, 00:03 AM,
Post: #2
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RE: BMW F20 EPS no see in esys
"flexray lines up to the FEM are good and ground too. "
Have checked for shorting and lead wire by wire? |
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29-10-2023, 08:40 AM,
Post: #3
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RE: BMW F20 EPS no see in esys
You should REALLY use oscilloscope for such jobs... If everything is there then is should work. If it doesn't - something is wrong and oscilloscope is BY FAR the easiest way to check.
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29-10-2023, 13:26 PM,
(This post was last modified: 29-10-2023, 13:40 PM by Vadim AA.)
Post: #4
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RE: BMW F20 EPS no see in esys
I think EPS not exist in SVT. So learn flexray is not successful.
Forcibly turn on all chanel of the flexray, and most likely a connection with EPS will appear. |
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29-10-2023, 14:01 PM,
Post: #5
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RE: BMW F20 EPS no see in esys
hello, I just didn't check with an oscilloscope. otherwise everything seems to be fine.
in SVT it is not visible but if I calculate the TAL it shows the EPS in red. Thanks |
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29-10-2023, 14:17 PM,
Post: #6
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RE: BMW F20 EPS no see in esys
there is no magic, you have no communication with EPS. You need to verify the Wires.. with OSCI, or
One By One with Multimeter, not only with your Eyes 
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29-10-2023, 14:34 PM,
(This post was last modified: 29-10-2023, 14:39 PM by Vadim AA.)
Post: #7
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RE: BMW F20 EPS no see in esys
(29-10-2023, 14:17 PM)bellphegorus Wrote: there is no magic, you have no communication with EPS. You need to verify the Wires.. with OSCI, or If ESP is not in SVT, then there will be no connection with it, because the bus flexray is not initialized. Firstly need the correct SVT record. Second - learn flexray. |
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29-10-2023, 14:44 PM,
Post: #8
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RE: BMW F20 EPS no see in esys
(29-10-2023, 14:17 PM)bellphegorus Wrote: there is no magic, you have no communication with EPS. You need to verify the Wires.. with OSCI, or And i have verified with voltímetro, 12v and found is ok, FLEXRAY from steering to FEM is ok. it just replaced the FEM because it didn't start the flexray and didn't see either DME or EPS, now I see DME but not EPS. |
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29-10-2023, 15:02 PM,
Post: #9
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RE: BMW F20 EPS no see in esys
Have You really checked twisted pair short circuit and conductivity or not? Or only think, that modules replacement resolve probably wiring problems?
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29-10-2023, 15:04 PM,
Post: #10
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RE: BMW F20 EPS no see in esys
I'll just leave a comment here from tool32
By German: Quote:comment : Automatische Abschaltung von nicht benцtigten Flexrayдsten des Sternkopplers |
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